Duncan setting up a Druid sacrificial stone might not attract too much attention from the church, nor would they necessarily intervene, as it's merely the last struggles of a minor faction. However, if he were to build a temple dedicated to Diana, the church would likely consider it a revival of the ancient Roman gods.
The significance of these two actions is entirely different, as Diana's faith is much more conspicuous.
Crow Queen Triss only wished for self-preservation and did not want Duncan to take risks by summoning back the ancient Roman gods, as the risks were too great.
Somewhere along the way, Duncan's safety had become more important to her than the continuation of Diana's faith.
Dimension Space.
Duncan suddenly entered a god's-eye view, and then everything in the projection changed, as if the dimension space had captured some supernatural laws of the real world.
A series of characters appeared in the projection.
——"Activate faith faction category."